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Friday, 2 August 2013

Benefits Of Aerobic Exercise & How To Exercise Aerobically

By Jasmine Greene


"Aerobics" was first coined by Dr. Kenneth Cooper, an exercise physiologist at San Antonio Air Force Hospital. He developed the formula of subtracting your age from 220 and exercising with the heart rate at 60-80% of that number. Though originally formulated to help astronauts, the benefits of "aerobics" made Dr. Cooper realize that this type of exercise is useful for everyone.

Since then studies have demonstrated many benefits of regular aerobic exercise, including:

*Weight loss & maintaining weight (aerobic exercise burns fat!)

* An increase in consistent, long-term energy and stamina

*Improved mood

*Pain relief (by natural endorphin production)

*Stronger heart & better circulation (keeps arteries clear and helps prevent heart disease)

*Improved blood sugar control and adrenal health

*Lower blood pressure

*Stronger bones and osteoporosis prevention

*Stronger immune system

*Longer life expectancy

If you've been struggling with poor energy, low endurance, aches and pains, too much body fat, too much stress, or sugar or carbohydrate cravings, chances are that you are not enough aerobic exercise!

The intensity and duration of exercise determine whether the muscles work aerobically or anaerobically. Aerobic exercise requires a very specific level of intensity for a minimum of thirty minutes. If the heart rate is too low or too high, the exercise becomes anaerobic instead.

During true aerobic exercise, the body burns fat for energy. This process requires oxygen, hence the term "aerobic." Aerobic exercise is useful for improving muscle endurance (allowing them to function for hours or days at a time without fatigue). This is especially important for those muscles that support posture, joints, and the arches of the feet. Therefore, if there is not sufficient aerobic exercise, the chances of joint problems, injuries, and low stamina increase.

In anaerobic exercise, sugar (glucose) is burned for energy. This process does not require oxygen. Burning sugar helps provide muscles with short-term speed and power. However, muscles cannot burn sugar for long, so they tire quickly. Most people have no shortage of anaerobic exercise. Even while seated, the body runs many tasks anaerobically, and virtually all sports are anaerobic due to their alternating bursts of high intensity activity and rest.

Dr. Phil Maffetone is an internationally recognized researcher who has greatly improved our understanding of aerobic exercise and endurance training. He studied many variables, including heart rate, gait, and muscle imbalances in many athletes before and after workouts. Dr. Maffetone discovered that the athletes who exercised using Dr. Cooper's original formula often ended up over-training and suffering from injuries, pain, joint problems, and distorted posture and body mechanics. His work led Dr. Maffetone to develop a new and improved formula for calculating each person's target heart rate for true aerobic exercise.

Follow these four simple steps to ensure your training is aerobic and to enjoy all the benefits of aerobic exercise:

1. Invest in a heart rate monitor, one with a chest strap as well as a wrist watch. It's not a good idea to exercise without one because you'll have no way of knowing if your pace is correct. There are many brands and models available to you. Polar is an industry leader and is usually a safe bet. If you work out in a gym, make sure your monitor is coded so that there is no electrical interference from other devices nearby.

2. Calculate your maximum aerobic heart rate using Dr. Maffetone's formula. Simply subtract your age from 180. For example, a 32 year old who wants to exercise aerobically would have a maximum heart rate of 148 beats per minute. Modifiers and exceptions to this formula include:

*Subtract another 10 from the maximum aerobic heart rate if: recovering from major illness or surgery, or if on any regular medications.

*Subtract another 5 from the max aerobic heart rate if you're injured, have regressed in competition or training, suffer from more than two bouts of cold/flu each year, have asthma or allergies, are just beginning to train, or if you have not been training consistently (Dr. Maffetone defines consistency as at least 4 times per week for 2 years).

*Add 5 to the max heart rate if: training consistently for more than 2 years without any injuries or problems and have made progress in competition.

*Add 10 to the max heart rate if you're over the age of 65.

*This formula does not apply to those age 16 or younger. The best bet for these athletes is 165 as the max heart rate.

*If in doubt, choose the lower maximum heart rate.

3. Calculate your minimum aerobic heart rate by subtracting 10 from the maximum aerobic heart rate. So a healthy 33 year old would have a max heart rate of 147 and a minimum of 137.

4. Jog, walk, swim, or bike while using the heart rate monitor. Be sure to stay within your aerobic heart rate zone for at least 30 minutes at a time, and at least 3 times per week. Do not exceed 90 minutes at a time without a doctor's supervision.

You will discover that it's surprisingly easy to exercise aerobically. It doesn't take much effort to elevate your heart rate to the target zone. That's good news for couch potatoes (talk about exercising smarter, not harder!), but sometimes frustrating for athletes who don't want to slow down their training. However, athletes need to do this to protect their bodies. The silver lining for athletes is that, as your heart becomes more aerobically fit, you'll be able to quicken the pace without exceeding your maximum aerobic heart rate. With your trusty heart rate monitor to guide you, you'll soon also discover that any activity other than running, walking, cycling or swimming (at a steady pace) is likely anaerobic.

As a chiropractor, acupuncturist, and athlete, I've noticed remarkable benefits with aerobic exercise for both myself and my patients. The immediate and long-term benefits are well worth the effort!




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